The Guiness World Record for largest augmented breasts is held by model, stripper, and adult film star Maxi Mounds, whose measurements are 42M-26-36 and whose breasts weight 20 pounds each. Maxi Mounds has an under breast measurement of 36 inches (91.44 cm) and an around chest-over-nipple measurement of 60.5 in (153.67 cm). Maxi’s breasts were augmented with string breast implants (polypropylene breast implants), which are implants that continue to grow after being implanted in the patient. Typically used by women who want to grow their breasts to a monstrous size, the implants are made of polypropylene which is a synthetic material that expands upon absorbing fluid in the body. String breast implants are typically used only by women in the adult industry and are not FDA approved and not available in the United States.

Who says porn stars lack amb­ition? Maxi Mounds has made a huge name for herself – by having the largest breast implants in the world.

Her 36MMM bust – each weighing 9kg (20lbs) – finally made it into the record books years after she learned there was a category for natural breasts.

‘I contacted Guinness World Records and asked if they had a category for implants, but they said no, so I let it go,’ she said.

‘Then they asked me if I was interested as they were creating a category. Eventually they told me I won.’

Ms Mounds – not her real name – became a lap dancer in Florida in the 1990s.

It was then the one-time ballet dancer and horse rider decided to enhance her figure.

Modest beginning: Ms Mounds pre-implants

‘I had the old-style silicone imp­lants,’ she explained. ‘But then came all the scare stories, so I had them replaced with overfilled saline.’

But her chest began to sag, so she had tubes put in her armpits so she could be topped up.

In 2000, she had her implants ­removed and the pockets filled with plastic string – a procedure which has been banned. A solution was injected to make the breasts produce fluid and ‘inflate’ – but they kept on growing.

She doesn’t have a fella now: ‘It takes a very special type of person to be with someone who looks like me because of the reactions I get from people whenever I’m out in public.

‘I’ve seen some pretty funny things happen. Men walking into things and getting slapped by their girlfriends because they were staring so hard.’